When an electric field is applied across a semiconductor
a. | electrons move from lower energy level to higher energy level in the conduction band |
b. | electrons move from higher energy level to lower energy level in the conduction band |
c. | holes in the valence band move from higher energy level to lower energy level |
d. | holes in the valence band move from lower energy level to higher energy level |
1. (a, c)
2. (a, d)
3. (b, d)
4. (c, d)
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